It is now well known that the Sharpe ratio and other related reward-to-risk measures may be manipulated with option-like strategies. In this paper we derive the general conditions for achieving the maximum expected Sharpe ratio. We derive static rules for achieving the maximum Sharpe ratio with...

We model a run on a financial market, in which each risk-neutral investor fears having to liquidate shares after a run, but before prices can recover back to fundamental values. To avoid having to possibly liquidate shares at the marginal post-run price - in which case the risk-averse...

This paper explains why seemingly irrational overconfident behavior can persist. Information aggregation is poor in groups in which most individuals herd. By ignoring the herd, the actions of overconfident individuals ("entrepreneurs") convey their private information. However, entrepreneurs...

The fees of experts (financial advisors, lawyers, accountants) are a substantial fraction of bankruptcy costs. Scholars have considered how best to reduce these costs, but have not considered how they should be allocated among creditors. The allocation issue is important because creditors can...

The consensus of 226 academic financial economists forecasts an arithmetic equity premium of 7% per year over 10 and 30 year horizons; and 6% to 7% over 1 and 5 year horizons. Pessimistic and optimistic 30-year scenario forecasts average 2% and 13%. Respondents claim to revise their forecast...

Having seen one too many David Letterman show, I decided that it was time for me to put together my own list for the best accomplishments of my discipline, Finance. There is much subjectivity in my particular selection of subjects. Still, I would guess that most finance professors would agree...

This paper models how imperfect memory affects the optimal continuity of policies. We examine the choices of a player (individual or firm) who observes previous actions but cannot remember the rationale for these actions. In a stable environment, the player optimally responds to memory loss with...

We review the theory and evidence on IPO activity: why firms go public, why they reward first-day investors with considerable underpricing, and how IPOs perform in the long run. Our perspective on the literature is three-fold: First, we believe that many IPO phenomena are not stationary. Second,...

U.S. corporations do not use their debt and equity issuing and repurchasing activities to counteract the mechanistic effects of stock returns on their debt equity ratios. Thus, over 1-5 year horizons, stock returns can explain about 40% of debt ratio dynamics. Although corporate (net) issuing...

Governments and vocal institutional shareholders have been exerting pressure on companies they deem to have objectionable operations (such as tobacco or chemical producers). This paper studies the effect of the most important legislative and shareholder boycott to date, the boycott of the South...